../ dmsp_15_ephemeris_20170325.txt 22-Jun-2023 00:33 108189 dmsp_16_ephemeris_20170325.txt 22-Jun-2023 00:33 108163 dmsp_17_ephemeris_20170325.txt 22-Jun-2023 00:33 108236 dmsp_18_ephemeris_20170325.txt 22-Jun-2023 00:33 108226